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Know about the test theme of Cisco 300-420 Exam
- Format: Multiple choices, multiple answers
- Language: English, Japanese
- Length of Examination: 90 minutes
- Passing score: 70%
- Number of questions: 65-75
Cisco 300-420 certification exam is intended for network professionals who have several years of experience in designing and deploying enterprise networks. Candidates should have a good understanding of network protocols, network architecture, and network security. They should also be familiar with the latest networking technologies and trends.
NEW QUESTION # 196
Drag and drop the properties from the left onto the protocols they describe on the right.
Answer:
Explanation:
NEW QUESTION # 197
How do endpoints inside an SD-Access network reach resources outside the fabric?
- A. A fabric edge is used to de-encapsulate VXLAN traffic to normal IP traffic then transported over the outside network
- B. Fabric borders use VRFs to map VNs to VRFs
- C. SD-Access transit links are used to transport encapsulated traffic from one fabric to another
- D. a VRF fusion router is used to map resources in one VN to another VN
Answer: D
NEW QUESTION # 198
Drag and drop the descriptions from the left onto the Cisco SD-WAN component they describe on the right.
Answer:
Explanation:
Explanation
Answer Area
is responsible for traffic forwarding, security, encryption, QoS,and routing protocols distributes routes and policy information via OMP enables centralized provisioning and simplifies network changes enables the communication of devices that sit behind NAT
NEW QUESTION # 199
Drag and drop the components in a Cisco SD-Access architecture from the left onto their descriptions on the right.
Answer:
Explanation:
NEW QUESTION # 200
Refer to the exhibit. All routers currently reside in OSPF area 0. The network manager recently used R1 and R2 as aggregation routers for remote branch locations and R3 and R4 for aggregation routers for remote office locations. The network has since been suffering from outages, which are causing frequent SPF runs. To enhance stability and introduce areas to the OSPF network with the minimal number of ABRs possible, which two solutions should the network manager recommend? (Choose two.)
- A. a new OSPF area for R3 and R4 connections, with R3 and R4 as ABRs
- B. a new OSPF area for R1 and R2 connections, with R1 and R2 as ABRs
- C. a new OSPF area for R3 and R4 connections, with R5 and R6 as ABRs
- D. a new OSPF area for R1 and R2 connections, with R5 and R6 as ABRs
- E. a new OSPF area for R1, R2, R3, and R4 connections, with R1, R2, R3, and R4 as ABRs
Answer: C,D
NEW QUESTION # 201
Refer to the exhibit.
An architect must design an IGP solution for an enterprise customer. The design must support:
Physical link flaps should have minimal impact.
Access routers should converge quickly after a link failure.
Which two ISIS solutions should the architect include in the design? (Choose two.)
- A. Configure access routers to establish a Level 1 adjacency and aggregate routers to establish a Level 1 / Level 2 adjacency.
- B. Configure all access and aggregate routers to establish Level 1 / Level 2 adjacencies across the network.
- C. Reduce SPF and PRC intervals to improve convergence time.
- D. Use BGP to IS-IS redistribution to advertise all Internet routes in the Level 1 area.
- E. Advertise the IS-IS interface and loopback IP address toward the Internet and data center.
Answer: B,C
NEW QUESTION # 202
Refer to the exhibit.
An engineer is designing a routing solution for a customer. The design must ensure that a failure of network
10.1.0.0/24, 10.1.2.0/24, 10.2.1.0/24, or 10.2.3.0/24 does not impact the core. It also requires fast convergence time during any link failover in the core or access networks. Which solution must the engineer select?
- A. Enable summarization on routers A and C.
- B. Enable FRR for the connected networks of routers A and C.
- C. Enable graceful restart on routers A and C.
- D. Add aggregation layer between core and access networks.
Answer: A
NEW QUESTION # 203
Refer to the exhibit. The full EIGRP routing table is advertised throughout the network. Currently, users experience data loss when any one link in the network fails. An architect optimizes the network to reduce the impact when a link fails.
Which solution should the architect include in the design?
- A. Summarize the access layer networks from each access layer switch toward the aggregation layer
- B. Summarize the access layer networks from the aggregation layer toward the core layer.
- C. Reduce the default EIGRP hello interval and hold time
- D. Run BFD on the inter links between EIGRP neighbors.
Answer: D
NEW QUESTION # 204
An engineer is designing a multicast network for a company specializing in VoD content. Receivers are across the Internet, and for performance reasons, the multicast framework close to the receivers within each AS. For high availability, if the sources in one AS are no longer available, the receivers of that AS must be able to receive the VoD content from sources in another AS. Which feature must the design include?
- A. Bidirectional PIM
- B. SSM
- C. MSDP
- D. Anycast RP
Answer: D
Explanation:
Explanation
https://learningnetwork.cisco.com/s/question/0D53i00000KsrGrCAJ/rendezvous-point-high-availability-mechan
NEW QUESTION # 205
Drag and drop the properties from the left onto the protocols they describe on the right.
Answer:
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/prog/configuration/166/b_166_programmability_cg/ b_166_programmability_cg_chapter_01011.html
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/prog/configuration/169/b_169_programmability_cg/ configuring_yang_datamodel.html
NEW QUESTION # 206
Refer to the exhibit.
An architect is designing a routing solution for a company. The new design will add a circuit routers C and D to protect against loss of connectivity to 10.0.4.0/24 during a link failure between routers B and D. Which solution must the architect choose?
- A. Stub receive-only
- B. Stub redistributed
- C. Stub connected
- D. Stub leak-map
Answer: C
NEW QUESTION # 207
The implementations group has been using the test bed to do a 'proof-of-concept' that requires both Client 1 and Client 2 to access the WEB Server at 209.65.200.241. After several changes to the network addressing, routing scheme, DHCP services, NTP services, layer 2 connectivity, FHRP services, and device security, a trouble ticket has been opened indicating that Client 1 cannot ping the 209.65.200.241 address.
Use the supported commands to isolated the cause of this fault and answer the following questions.
What is the solution to the fault condition?
- A. Enable OSPF routing on the s0/0/0 interface using the network 209.65.200.0 0.0.0.255 area 12 command.
- B. Redistribute the BGP route into OSPF using the redistribute BGP 65001 subnet command.
- C. Enable OSPF routing on the s0/0/0 interface using the network 10.1.1.0 0.0.0.255 area 12 command.
- D. Enable OSPF authentication on the s0/0/0 interface using the ip ospf authentication message-digest command
Answer: D
Explanation:
On R1, for IPV4 authentication of OSPF the command is missing and required to configure------ ip ospf authentication message-digest
NEW QUESTION # 208
An architect must create a QoS solution for a customer to ensure that a 40 Mbps Internet connection is shared between four subnets based on these requirements:
- Each subnet must receive no less than 10 Mbps of download bandwidth
during peak traffic times.
- A subnet can use up to 40 Mbps during nonpeak traffic times if the
other subnets are idle.
- Download traffic must never experience a delay.
Which solution must the architect choose?
- A. shaping and policing
- B. rate-limiting and shaping
- C. bandwidth percentage and rate-limiting
- D. bandwidth percentage and policing
Answer: D
Explanation:
Shaping: Shaping is used to control the traffic flow by buffering excess packets during periods of high demand and then releasing them at a rate that conforms to the desired profile. In this case, shaping can be employed to ensure that each subnet receives no less than 10 Mbps during peak traffic times.
Policing: Policing is used to enforce traffic policies by discarding or remarking packets that exceed specified rate limits. In this scenario, policing can be employed to ensure that a subnet does not exceed its allocated bandwidth (40 Mbps) during non-peak times.
NEW QUESTION # 209
How are wireless endpoints registered in the HTDB in a Cisco SD-Access architecture?
- A. Fabric WLCs update the HTDB as new clients connect to the wireless network
- B. Fabric APs update the HTDB with the clients' ElD and RLOC
- C. Border nodes first register endpoints and then update the HTDB
- D. Fabric edge nodes update the HTDB based on CAPPWAP messaging from the AP
Answer: A
Explanation:
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Campus/cisco-sda-design-guide.html
NEW QUESTION # 210
Which routes does the overlay management protocol advertise in an SD-WAN overlay?
- A. prefix, TLOC, and service
- B. primary, backup, and load-balanced
- C. underlay, MPLS, and overlay
- D. Internet, MPLS, and backup
Answer: A
NEW QUESTION # 211
Refer to the exhibit.
Refer to the exhibit. Customers report low video quality and delays when having point-to-point telepresence video calls between the two locations. An architect must optimize a design so that traffic follows the same path for egress and ingress traffic flows. Which technique optimizes the design?
- A. Configure route filter on the router in area 4.
- B. Configure route leaking on the router in area 2.
- C. Configure the high metric on the router in area 4.
- D. Configure route leaking on the router in area 1.
Answer: C
NEW QUESTION # 212
Drag and drop the characteristics from the left onto the telemetry mode they apply to on the right.
Answer:
Explanation:
NEW QUESTION # 213
Drag and Drop Question
Drag and drop the characteristics from the left onto the correct telemetry mode on the right.
Answer:
Explanation:
Explanation:
In a dial-in mode, the destination initiates a session to the router and subscribes to data to be streamed.
Dialin mode is supported over gRPC in only 64-bit platforms In a dial-out mode, the router initiates a session to the destinations based on the subscription.
All 64-bit IOS XR platforms (except for NCS 6000 series routers) support gRPC and TCP protocols. All 32-bit IOS XR platforms support only TCP.
Reference:
https://www.cisco.com/c/en/us/td/docs/iosxr/asr9000/telemetry/b-telemetry-cg-asr9000-61x/b- telemetry-cgasr9000-61x_chapter_010.html#id_36445
NEW QUESTION # 214
Refer to the exhibit. AS65533 and AS65530 are announcing a partial Internet routing table as well as their IP subnets. An architect must create a design that ensures AS64512 become a transit AS. Which filtering solution must the architect choose?
- A. No-advertise
- B. Maximum-prefix
- C. Next-hop
Answer: B
NEW QUESTION # 215
A global organization with several branches hired a network architect to design an overlay VPN solution. The branches communicate with each other frequently. The customer expects to add more branches in the future.
To meet the customer's security requirements, the architect plans to provide traffic protection using dynamic IPsec tunnels. Which solution should the architect choose?
- A. L2TP
- B. GETVPN
- C. DMVPN
- D. EasyVPN
Answer: C
NEW QUESTION # 216
Refer to the exhibit.
Which solution decreases the EIGRP convergence time?
- A. Enable subsecond timers
- B. Increase the hold time value
- C. Enable stub routing on the spokes
- D. Increase the dead timer value
Answer: C
NEW QUESTION # 217
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